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Add Text Watermark
Add customizable text watermarks to your PDF pages locally and privately.
100% Secure Client-Side Overlay
Select PDF document
Drag & drop or select a PDF file to overlay text watermark
Document Status
document.pdf (0 KB)
CONFIDENTIAL
Watermark Template Live Preview
Adjust settings on the right to see the live template representation.
Watermark Settings
30%
50 pt
45°
#ef4444
Processing watermark...
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Frequently Asked Questions
Quick direct-answer guides about using this utility tool locally and securely.
Is the PDF Text Watermark tool free to use?
Yes, the PDF Text Watermark tool on KuberAgent is completely free to use with no sign-up required. You can watermark unlimited PDF pages directly in your browser.
What file size or page limit does the tool support?
The tool supports PDFs up to [X]MB and works on documents with unlimited pages, since watermarking happens locally in your browser rather than on a server.
Can I add the same watermark to multiple PDFs at once (bulk watermarking)?
yes, Currently the tool processes one PDF file at a time to keep the browser-based processing fast and secure.
Does the watermark reduce the quality of my PDF?
No, the tool adds the watermark text as a vector overlay, so your original PDF content, images, and text remain in their original resolution and quality.
Can I remove or edit the watermark after adding it?
Once a watermark is applied and the file is downloaded, it becomes a permanent part of that PDF page. To make changes, re-upload your original (non-watermarked) file and reapply with new settings.
Which browsers and devices support this tool?
The tool works on any modern browser — Chrome, Firefox, Safari, and Edge — on both desktop and mobile, since all processing happens client-side with no installation needed.
Is this tool safe to use for confidential or sensitive documents?
Yes. Since the PDF never leaves your device and no file is uploaded to a server, it's safe for confidential, legal, or business documents.